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Finding the Fourth Proportional to 581,690.40, 872,535.60 and 384,698.40

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Solution

The fourth proportional to 581,690.40, 872,535.60 and 384,698.40 is: 577,047.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    581,690.40 : 872,535.60 = 384,698.40 : x
  2. Step 2: Convert to fraction form
    581,690.40/872,535.60 = 384,698.40/x
  3. Step 3: Cross multiply
    581,690.40x = 872,535.60 × 384,698.40
  4. Step 4: Simplify right side
    581,690.40x = 335,663,049,263.04
  5. Step 5: Solve for x
    x = 335,663,049,263.04/581,690.40
  6. Step 6: Final answer
    x = 577,047.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.